UA 5980 then DL 3929 at LAX
Phoenix Sky Harbor → Los Angeles → Reno
Timetable, Los Angeles time
20:18UA 5980 from Phoenix Sky Harbor at the gate
20:08DL 3929 to Reno leaves the gate
23 h 50 apart on the timetable, overnight
DL 3929 leaves 23 h 50 after UA 5980 arrives on the timetable: more than half a day, so not a connection we count.